Pure Magnesium Power

• Supports sleep quality*
• Supports the body's stress response*
• Formulated in the glycinate form
• Gentle for daily use*

Schuster, J. et al. (2025) — Nature and Science of Sleep 

A randomized, double-blind, placebo-controlled trial in 155 healthy adults reporting poor sleep found that magnesium bisglycinate at 250mg elemental magnesium daily — the same form used in Pure Magnesium Power — was associated with a significant reduction in insomnia severity scores over four weeks compared to placebo, with the strongest effects in participants whose baseline dietary magnesium intake was lower.

What this means for this formulation: This is the load-bearing study — it used the same form and a comparable dose to Pure Magnesium Power. The effect size was modest, not dramatic, and showed up over weeks of consistent use. That's the honest shape of the evidence.

Boyle, N.B. et al. (2017) — Nutrients 

A systematic review examining magnesium supplementation and the body's stress response found magnesium supplementation was associated with reductions in cortisol and other stress-hormone responses, with evidence strongest in populations with lower baseline magnesium status.

What this means for this formulation: Evidence is strongest in magnesium-insufficient populations — which describes many chronically stressed adults. This supports framing magnesium as a nutritional foundation for nervous system support rather than a quick fix.

Abbasi, B. et al. (2012) — Journal of Research in Medical Sciences 

A randomized, double-blind trial in older adults with insomnia found magnesium supplementation was associated with improvements in insomnia severity, sleep efficiency, sleep onset time, and early morning awakening compared to placebo.

What this means for this formulation: This earlier trial used magnesium in a population where low magnesium status was confirmed — consistent with the depletion pattern that stress-loaded adults commonly present with. It's a supporting study that points in the same direction as the more recent, form-specific research.

The studies cited above are classified as Level B evidence — multiple peer-reviewed randomized trials and one systematic review converging on directional findings, with modest effect sizes. Individual results vary based on baseline magnesium status, dietary intake, and lifestyle factors.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Active ingredient: Magnesium (from 2,500mg Magnesium Glycinate) — 275mg elemental magnesium per serving (65% DV)

Other ingredients: Hypromellose (capsule), Magnesium Stearate, Silicon Dioxide, Rice Flour

Why magnesium glycinate — not magnesium oxide:

Magnesium oxide has poor bioavailability — much of it passes through the body unabsorbed, which means you don’t get the benefit of most of what you take. Magnesium glycinate binds magnesium to the amino acid glycine, which improves absorption and reduces the laxative effect common with the oxide form at higher doses. Glycine itself also has mild calming properties on the nervous system, which is part of why this form is most commonly studied in sleep and stress contexts.

What’s Not In It:

• No artificial fillers
• No proprietary blends
• No added colors or sweeteners

Manufactured in an FDA-registered, cGMP-compliant facility in the US.

Take three (3) capsules once daily, or as directed by your healthcare professional. Do not exceed the recommended dose.Best taken: in the evening, 30–60 minutes before your intended sleep time. Magnesium glycinate may be taken with or without food — if you experience any mild digestive discomfort, take with a small meal.

Consistency Note:

Magnesium glycinate works through gradual restoration of magnesium status, not as an acute intervention. Most people report noticeable changes in sleep quality and muscle tension within 4–8 weeks of consistent daily use. Skipping days extends the timeline. Subscribe & Save exists to make consistency easier — not to lock you in.

For Regulators — how this fits your evening practice:

If your stress response has been running high for a long time, winding down at night is often the hardest part — the body stays switched on when it's time to power off. Magnesium is studied for its role in supporting the body's stress response and the relaxation pathways involved in winding down, which is why evening is the natural time to take it.

Take your capsules as part of your evening wind-down ritual — alongside your breathwork or your screen-off time — rather than as a standalone pill. Magnesium supports the conditions for rest; the ritual is what carries it. The research timeline is weeks of consistency, not a single dose, so the goal is making the evening capsule a habit you don't think about.*

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Q: How long until I notice a difference?

A: Research suggests changes in sleep quality tend to appear within 4–8 weeks of consistent daily use. Magnesium status — like most micronutrient levels — develops slowly and restores slowly. If you're not noticing any change after 8 weeks of consistent use, that's worth discussing with your healthcare provider.

Q: I take other supplements or medications. Is this safe?

A: Magnesium can interact with certain medications, including some antibiotics, diuretics, and medications for osteoporosis (bisphosphonates). If you are taking any prescription medication, consult your healthcare provider before adding magnesium supplementation. Pregnant or nursing individuals and those with kidney disease should consult a physician before use.

Q: Why should I subscribe instead of buying one-time?

A: Because consistency is the variable that determines whether this works. Magnesium status restores through daily intake over weeks — not through occasional supplementation. Subscribe & Save gives you 15% off monthly and 20% off 90 day delivery with the ability to skip or cancel anytime. There's no contract and no penalty for canceling. The discount is there because we'd rather you stay consistent than run out mid-month.

Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with a known medical condition should consult a physician before using this or any dietary supplement.

Warning: Keep out of reach of children. Do not use if the safety seal is damaged or missing. Store in a cool, dry place.